Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!ucsd!ucbvax!YALEMED.BITNET!BEEBE From: BEEBE@YALEMED.BITNET (Rick Beebe) Newsgroups: comp.sys.misc Subject: RE: INFO-MICRO Digest V90 #79 Message-ID: Date: 17 Dec 90 20:34:00 GMT Sender: usenet@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 25 poulin@polar.bowdoin.edu (Jeff Poulin) writes: >Here's a dumb little question that I'm not sure of the answer. Which >direction should the fan be blowing: into the power supply or out of it? >My computer came configured with the fan blowing in (presumably to keep >the stuff in the power supply cool), but I noticed the cards become quite >warm and one of the hard drives starts sounding like a car going 40mph in >first gear if I leave the computer on for more than 12 hours. Otherwise >it seems to be fine and the hard drive is fairly quiet. Any takers? Well, on the three I checked here (IBM, Zenith and CompuAdd) the fan is blowing out. It seems to make more sense that the fan would draw air in in from the (usual) vents in the front of the case, across the cards to keep them cool, and then into the supply (to keep it fairly cool) and then out. ----------------------------------------------------------------------------- Rick Beebe (203) 785-4566 ***** ***** ***** * * Biomedical Computing Unit * * * ** * Yale University School of Medicine * * *** * * * 333 Cedar Street, New Haven, CT 06514 * * * * ** * * * * * BEEBE@YALEMED.BITNET beebe%biomed.decnet@venus.ycc.yale.edu -----------------------------------------------------------------------------